Mining machine



Nov. l, 1932. w. T. RoalNsoN MINING MACHINE Filed Dec. 14, 1929 5Sheets-Sheet l Nov. 1, 1932. w. T. ROBINSON MINING MACHINE Filed Dec.14. 1929 5 sneeissneet 2 Nov. l, 1932. w.A T. ROBINSON MINING MACHINEFiled Dec.` 14. 1929 5 Sheets-Sheet 3 gmc/who@ r l O @warmup G IW* mv-UW -IIHWii/wfy MY 74A www@ n Sv NOV. 1, 1332. w. TIRQBlNSQN 1,885,295

MINING MACHINE Filed Dec. 14, 1929 ,5 sheets-sheet 4 NV- l, 1932- w. T.RoBlNsoN MINING MACHINE FlSd D80. 14, 1929 5 Sheets-Sheet 5 l ll MII?Patented Nov. 1, 1932 UNITED STATES PATENT OFFICE MINING MACHINEApplication lcd December 14, 1929. Serial No. 414,107.

This invention relates to a mining machine and while it is particularlyuseful for mining coal, it can also be employed advantageously indrilling rock. o

One of the objects of the invention is to provide drilling mechanismcarried by a truck which can be moved at will along the supportingsurface, the drilling. mechanism being so supported as to be readilyadjusted to bore in any direction and at any desired elevation.

Another object is to provide simple and efficient means for adjustingthe mechanism of the machine.

A further object is to provide a machine of this character having itsdrilling mechanism carried by an angularly adjustable boom.

A still further obj ect is to provide a mining machine which can be usedin either a narrow or a wide space within a mine.

With the foregoing and other objectsin view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of theinventioii herein disclosed may be made within thescope of what is claimed without departing from the spirit of theinvention.

In the accompanying drawings the preferred forms of the invention havebeen shown.

ln said drawings,

Figure 1 is a side elevation of the machine, one of the positions of thedrilling mechanism being indicated by broken lines.

Figure 2 is a top plan view.

Figure 3 is an enlarged side elevation of one of the means employed foranchoring the machine to a supporting track.

Figure 4 is a section on line 4 4, Figure 3. 4 Figure 5 is an enlargedsection on line 5 5, Figure 2.

Figure 6 is an enlarged section on line ,6 6, Figure 2.

Figure 7 is an enlarged section on line 7 7, Figure 2.

Figure 8 is a side elevation of a portion of a modified form of machineutilizing an eX- tensible or telescopic boom.-

Figure 9 is a section on line 9 9, Figure 8, said section being on anenlarged scale.

Figure 10 is an enlarged section on line 10 10, Figure 8.

Referring to the figures by characters of reference, 1 designates theframe of a carriage supported by wheels 2 which, in turn, are adapted totravel along a track T. To each side of the frame 1 are attached studs3. Each stud has a block 4 rotatably mounted thereon and to each blockis pivotally connected the forked end 5 of a bar 6. This bar has an ear7 in which is swivelled an adjust- 65 ing bolt 8. The bolt is inthreaded engagement with an ear 9 extending outwardly from a slide 10.Slots 11 are formed in the :slide for the reception of guide bolts 12projecting y from bar 6. Slide 10 has a foot 13 adapted 7 to be extendedunder one of the rails of the track T and by rotating the bolt 8 saidrail can be gripped between the lower end of bar 6 and the foot 13. Byproviding several of these anchoring devices, the frame 1 can be heldfiXedly to the track. When it is desired to move the carriage, theslides 10 are lowered to disengage their feet from the track andthereafter bars 6 and the parts carried thereby can be swung upwardlyout of the way as shown by broken lines in Figure l.

Any suitable means may be employed for actuating the carriage. Forexample, two of the wheels 2 can be fiXedly secured to their axle 14 anda sprocket 15, which is fast on said aXle, can be driven through a chain16 from a sprocket 17 on a countershaft 18. Motion is transmitted to thecountershaft through gears 19 and 20 from a motor 21 secured on aplatform 22 located on the rear portion of frame 1. This drive mechanismcan be controlled by any suitable mechanism and it is not deemednecessary to show or describe the same.

Secured on the frame 1 above the space between the wheels 2 is a base 23to the central portion of which is fastened a centering disk or swivelmember 24. This member is embraced by another centering disk or swivelF, member 25 secured to and depending from the central portion of atable 26 which is provided with supporting wheels 27 adaptedvto travelon the base 23. A king bolt 28 extends through the center of the tableand the centers of the swivel members and 24, this bolt being secured inthe base 23 and serving to hold the table properly assembled with thebase and with the frame 1.

A circular series of apertures 29 is formed in base 23 concentric withthe king bolt 28 and any one of these apertures is adapted lto receive alocking pin 30 movably connected to the table 26. Thus it will be seenthat the* To this shaft is secured a large gear 33 which is constantlyin mesh with a worm 34 carried by a shaft 35. This shaft is journaled inbearings 36 provided therefor on the table and it has a worm gear 37adapted to be actuated by a worm 38 carried by the shaft 39 of anelectric motor 40. Thus it will be seen that by controlling` a circuitto the motor the gear 33 can be rotated at will and at a slow speed.

FiXedly secured to the shaft 32 so as to rotate therewith is a boom 41which, as shown particularly in Figure 2, can be'in the form of anelongated frame. When gear 33 and shaft 32 are actuated as heretoforeexplained, this boom can be swung upwardly or downwardly relative to thecarriage and as indicated by arrows in Figure 1.

While the carriage is being moved from place to place, the boom can besupported substantially in a horizontal position by means of a pivotedprop 42 carried by frame 1 and adapted to engage the bottom portion ofthe boom as shown by broken lines in Figure 1.

Secured on the outer portion of boom 41 is a base 43 on which isarranged a centering.

disk or swivel member 44 extending into and movably engaged by an uppercentering disk 45 attached to and depending from a table 46.

A king bolt 47 extends through. the table and i through the centeringmembers and'serves to hold these parts assembled with the base 43.

Wheels 48 are connected to the table 46 and adapted to travel on thebase 43.. An annular series of apertures 49 concentric with king bolt 47is formed in base and any one of these is adapted to receive a lockingpin 50 extending through table 46 so that said table can thus be held inany position to which it may have been reta ted.

A pedestal 51 is secured to the table 46 and has a segmental flange 52secured to one side portion thereof. Suspended between the sides of thepedestal is a gear housing` which can be formed of separable members asshown and extending from this housing is an ear 54. A series ofapertures 55 provided.

in flange 52 and any one of these is adapted to receive a bolt 56extending from the ear.

A trunnion 57 is extended from one side of the housing 53 and j ournaledin ore side portion of pedestal 51. Alining with this trunnion andextending from the other side of the housing is a tubular trunnion 58journaled in the adjacent side of the pedestal. In this tubular trunnionis ournaled a shaft 59 having a sprocket 60 at its outer end adapted toreceive motion through a chain 61 from a sprocket 62 secured to theshaft of a motor 63. This motor is mounted-*between the side portions ofthe pedestal and its operation can be controlled by any suitable meansprovided for that purpose.

Secured to that end of shaft 59 within housing 53 is a beveled gear 64which meshes with a large beveled gear 65. This gear is securedl to oneend of a sleeve 66 journaled in a bearing extension 67 on the housing.

A screw-threaded shaft 68, constituting a feed screw, is slidablymounted in gear and sleeve 66. This shaft has one or more longitudinalkeyways 69 into each of which projects a key 70 carried by sleeve 66.Thus while the shaft is caused to rotate with the sleeve and with gear65, it is also free to move longitudinally relative thereto.

An annular flange 71 is provided at the outer ends of bearingextension67. To this iiange are secured the opposed members 7 2 of a split feednut. These members are pivotally connected by a bolt 73 which serves toattach them to flange 71. drawn together by a bolt 74 extending throughslotted ears 75 carried by the members. Thus the feed nut can betightened about the feed screw so that when the screw is rotated it willbe fed forwardly. By releasing bolt 74, however, the members of the feednut can be swung apart out of engagement with screw 68 to permit quicksliding movement of the screw. A thrust bearing formed of balls or thelike indicated at 76 can be interposed between the feed nut and thebearing extension 67.l

The outer end of the feed screw or shaft 68 can be provided with anysuitable form of clutch 77 for engaging one end of a drill 78.

Instead of actuating the boom 41 by means of gear 33 and the partscooperating therewith. a reel 7 9 can be mounted on the carriage. A gear80 which receives motion from gear 19, is adapted to drive chain andsprocket mechanism indicated generally at 81 whereby motion may betransmitted to a clutch n'iember 82. By means of a hand lever 83 and anysuitable mechanism controlled thereby. the actuation of the wheel can bekept under the control of the operator.

Reel 7 9 can be connected by a cable (not shown) to the boom so thatwhen the reel is rotated, the boom can be caused to move upwardly ordownwardly to bring the drill- Members 72 can be ing mechanism intoproper position. As before explained this reel is to be. used instead ofthe adjusting mechanism shown for eX- ample in Figure 7.

In practice the machin-e is moved along the track T until brought closeto the place where the drilling operation is to be carried out. Boom 41is adjusted angularly and thereafter the housing 58 is rotated about itstransverse aXis to bring drill 7 8 to the correct angle relative to thematerial to be drilled. By means of bolt 56 the housing is lockedagainst further y movement. Motor 63 is then actuated to drive shaft 59so that motion will be transmitted pedestal can be adjusted about itsking bolt 47. v

Thus it is possible, in combination with the angular adjustment of theboom, to bring the drill to any desired position.

Instead of forming the boom of a non-eX- tensible frame as heretoforedescribed, it can be made eXtensible or telescopic as shown in Figures 8and 9. In this modified structure, the boom includes spaced tubularmembers 84 mounted to swing with gear 85 and its shaft 86. These tubularmembers have longitudinal slots 87 in which slide rack bars 88 arrangedlongitudinally along slidable boom members 89 which are located in themembers 84. Racks 88 engage gears 90 carried by a shaft 91 extendingtransversely of the boom and supported by bearing members 92 dependingfrom the frame members 84. By means of a crank arm 93 or the like shaft91 and gears can be rotated to shift the members 89 longitudinallyrelative to members 84, thereby they have been adjusted. Such means arewell-known to the skilled mechanic and it is not deemed necessary toillustrate or describe the same.

What is claimed is:

In a machine of the class described a carriage, a base lfixed on thecarriage, a centrally pivoted table supported for rolling engagementwiththe base, a motor supported by and rotatable with the table, a gearsupported above and 'rotatable with the table, an extensible boommovable with the gear for vertical 'swinging movement, means on thetable and driven by the motor for rotating the gear, a base fiXedlycarried by the free end portion of the` boom, a vertically eXtensiblepedestal supported on the base and mounted for rotation thereon about anaxis perpendicular to the base, a drillingl mechanism adjustableangularly on the pedestal, and motor driven means on the pedestal foroperating said drilling mechanism While in any angular position.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature.

WILLIAM THOMAS ROBINSON.

to increase or reduce the length o f the boom. i

If desired, and as shown in Figures 8 and 10, the drilling mechanismindicated generally at 94 can be mounted on a slidable structure 95.This structure. is mounted on and guided by a pedestal 96 adjustablymounted on a base 97 at the outer end of the boom. The pedestal, whichcan be formed of spaced side members, has rack bars 98 arrangedlongitudinally of each side member. These rack bars are engaged by gears99 secured to a shaft 100. By means of a crank arm 101 or the like, theshaft can be rotated to raise or lower the structure relative to thepedestal.

Obviously, any suitable means can be employed for holding the structure95 and the slidable members 89 against movement after

